Metallic door



' July 22 1924.

R. W. DISBRO METALLIC DOOR Filed April 25 1921 aww/whoa @Roger W. DsbroPatented July 22, 1924.

UNITED STATES PATENT OFFICE.

ROGER W. DISBRO, OF CLEVELAND HEIGHTS, OHIO, ASSIGNOR T THE W. S. TYLERCO., OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

METALLIC DOOR.

Application led April 25, 1921. Serial No.. 464,437.

To all whom z't may concern:

Be it known that I, ROGER W. Diseno, a citizen of the United States, anda res1dent of Cleveland Heights, county of Cuyahoga and State of Ohio,have invented a new and useful Improvement in Metallic Doors, of whichthe following is a specification, the principle of the invention being.herein explained and the best mode 1n which I have 1o contemplatedapplying that principle, so as to distinguish it from other lnventions.

This invention relates to improvements in the construction of metallicdoors, referring more especially to that class of doors used in elevatorenclosures, and the general ob ject thereof is to provide a noveldoorwhich shall be light in weight, rigid and durable, and shall be simpleand comparatively inexpensive to manufacture.

An object of my invention is to provide a door made from metallictubular stock, in which the several parts, such as the sides and the topand base panels, are secured together by butt-Welding. By thisconstruction, I 2l provide a very rigid, light weight door having smoothouter surfaces, and thus avoid the use of screws and nuts or similarfastening means which deface the appearance of the door and interferewith the movement of the same when used in a bank of sliding doors, asin elevator enclosures.

With the above and other objects in view, I have devised the novel doorwhich I will now describe, referring to the accompanying drawing forminga part vof this specification and using reference characters toindicate' the several parts. To the accomplishment of the foregoing andrelated ends, the said invention, then, consists of the meanshereinafter fully described and particularly pointed out in the claims.

The annexed drawin and the following description set forth in 5e nismembodying the invention, such disclosed means constituting, however, butone of various mechanical forms in which the principle of the inventionmay be used.

In said annexed drawing Fig. 1 is a front elevation of the frame of mynovel door, per se, i

Fig. 2 a .horizontal section of the line 2-2 in Fig. 1 looking in thedirection of the arrows;

Fin' a n vprfinnl snntinn through the uriner tail certain mecha.

panel of the frame, being taken on the line 3 3 in Fig. 1 looking in thedirection of the arrows, and

Fig. 4 is a vertical section through the lower anel taken on the line4-4 in Fig. 1.

In Fpig. 1 there is shown a door frame 10 comprising vertical sidemembers 11 and 12 which are connected at their upper ends by ahorizontal cross piece or panel 13, and at their lower ends by a basepanel 14. The members 11 and 12 are constructed .from lengths ofmetallic tubular` stock, being shown in the present instance asrectangular tubing having straight sides.

The cross panel 13 is made from a len th of similarly constructedmetallic tubing, preferably of the same thickness as the side members soas to provide llush joints between the several parts when assembled, aswill be described. As indicated at 15, the ends of the part 13 areplaced in abutment against the adjacent sides of the members 11 and 12,thus spacing the side edge members apart and providing a central opening16 in the frame, in which may be inserted a glass pane or ornamentalpanel, not shown. To avoid the usage of screws and nutsl or the like,which are visible and project beyond the surface of the door, I securethe side members to the ends of the cross panel 13 by the process ofbutt-welding.

-The base panel 14 is'similarly secured between the lower ends of theside'members by butt-welding its extremities to the adjacent sides ofsaid members, as at 17 The panel 14 may be made of 'a wider piece ofmetallic tubular stock than the side members or the panel 13, havingportions 18 at its upper and ower edges, which compare in thickness withthe side members, and having its central portion 19 of relatively lessthickness. It has been found that this construction of the lower panelpresented a very .rigid and durable structure.

It is to be understood that the specific shape, or cross section, of thetubular members comprising the side edges, the upper and lower panels isimmaterial, and that the invention contemplates the construction of adoor from metallic tubing of various shapes and desi s which are securedtogether by butt-wel ing to form the framework.

Other modes of applying the principle of mv invention may be employedinstead of the moebel sids1 members and integrally united there- Wit 2.A metallic door comprising parallel tubular metallic members forming thesides ofthe door and parallel transverse tubular metallic members havingtheir open ends abutted against theadjacent faces of said first membersand integrally united there- 2o with.

Signed by me this 7th day of April, 1921.

ROGER W. DllSBRO.

